“Bellis perennis, the daisy, is a European species of the family Asteraceae, often considered the archetypal species of the name daisy. To distinguish this species from other plants known as daisies, it is sometimes qualified as common daisy, lawn daisy or English daisy.” - Wikipedia
This 👉 Site describes daisy as “any of several species of flowering plants belonging to the aster family (Asteraceae). The name daisy commonly denotes the oxeye daisy (Leucanthemum vulgare), the Shasta daisy (L. ×superbum), and the English, or true, daisy (Bellis perennis). These and other plants called daisies are distinguished by a composite flower head composed of 15 to 30 white ray flowers surrounding a centre consisting of bright yellow disk flowers, though other colour combinations are common.”
Pictures of daisy flowers from the Flower Dome, taken when I was last there.